ML19323F318

Add Revised Pages for Facility Inservice Insp Program, Incorporating Addl Pipe Weld Insp to Provide Protection Against Pipe Whip

ML19323F318
Person / Time
Site:	Browns Ferry
Issue date:	05/15/1980
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML19323F306	List: ML19323F305 ML19323F318
References
NUDOCS 8005280759
Download: ML19323F318 (10)

Text

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.t ENCLOSURE This enclosure consists of revised pages from the Browns Ferry Nuclear Plant unit 3 inservice inspection program. These pages are identified by the effective date of the revisions, July 3, 1979, in the upper righthand corner of each page. The location of the revised or additional

< information on each page is identified by a vertical bar in the righthand 1

4 margin. Table 1A is being added.

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2. Main Steam Piping

• There are some 139 (including the 4 pipe-to-vessel no::le safe-end welds) Class 1 circumferential and branch connection pressure boundary pipe joint velds in the main steam piping subject to inspection. All accessible welds will be inspected for the preservice baseline examination and 40 of the welds will be inspected in the inservice inspection interval. Four known welds are inaccessible because of being located under piping supports (25-3-1, 25-3-81, US-3-29, 25-3-56). See Table I for veld si:e and scheduled inspections. .

There are some 78 class 2 circumferential and branch connection pressure boundary pipe weld joints subject to examination. Approx-imately 15 of these welds will be examined during the first inservice inspection interval and 59 welds during the four intervals. See Table II for veld si:e and scheduled inspections.

The entire system is carbon st. eel and all'26-inch piping has longitudinal scam welds. ~

3. Feedvater Pining There are some 77 (including the 6 pipe-to-vessel no::le safe-end welds) Class 1 circumferential and branch connection pressure boundary pipe joint welds subject to examination.

The entire system piping is carbon steel. All accessible circumferencial welds will be inspected for the preservice baseline, and 27 of the welds will be inspected during the inservice inspection interval. Two known welds are inaccessible because of being located under piping supports (KFW-3-4, KFW-3-22). See Table I for weld size and scheduled inspections. -

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4. Core Spray Piping

• There are some 27 (including the 2 pipe-to-vessel nozzle safe-end welds) Class 1 circumferential pressure boundary pipe welds in the core spray piping subject to exanination. The entire system is stainless steel. All circumferential welds will be inspected for the preservice baseline, and 10 of the welds will be inspected during the 10-year inspection i interval. See Table I for veld size and scheduled inspections.

5. Residual Heat Re= oval System Piping There are 35 Class 1 stainless-steel pressure boundary circum-ferential and branch connection joint velds (excluding the two dissimilar welds covered in Section N) in this system, some of which have longitudinal welds intersecting. There are also 7 Class 1 carbon-steel circumferential welds. All circumferential welds will be inspected for the preservice baseline examination, and 19 welds will be examined during the 10-year inspection interval. One known weld is inaccessible .

inside a containment penetration (TRHR-3-193). Table I outlines the weld size and scheduled inspections.

There are some 367 Class 2 circusferential and branch connection pressuse bauadacy pipe weld joints subject to exasination.

Approximately 44 of these welds will be examined during the first inspection and 160 welds during the four intervals. See

, Table II for veld size and scheduled inspections. All Class 2 portions are carbon steel.

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6. Cener,1 nod Drive '.tvdraulie Return Thera are 15 Class 1 pressure boundary circumferencia,1 joint welds (including the pipe-to-vessel nozzle safe-end weld) in this entirely stainless-steel system. All these circum-

• ferential joint welds will be examined for the preservice baseline examination, and 4 welds will be inspected during the inspection interval. See Table 1 for outage inspection 8

schedule.

7. Reactor Cleanup System Piping There are 15 Class 1 circumferential joint welds in the stainicss-steel and 7 Class 1 circumferential joint welds in the carbon-steel portions of this system. All accessible circumferential welds will be inspected for the preservice baseline examina-tion, and 9 welds will be examined during the 10-year inspection interval. See Table I for outage schedules.

8. RCIC Piping There are come 4 Class 1 circumferential joint welds in this carbon-steel system cubject to examination. All 4 joints will be inspected for the preservice baseline examination and 1 joint during the 10-year inspection interval. See Table I for veld size and scheduled inspections.

9. HPCI Piping There are some 18 Class 1 pressure boundary circumferential joint welds in this carbon-steel system. All accessible circum-e 9

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7/3/79 ferential weld joints will be insp'ected for the preservice baseline examination, and 9 velds will be inspected during the inspection interval. See Table I for veld size and scheduled inspections.

I. Piping Pressure Retaining Bolting There-is no pressure retaining bolting in any of the Class 1 piping systems under consideration larger than 2 inches. The flange bolting for the head spray piping and the relief and safety valve-to-main steam flange bolting will be visually inspected by TVA during normal maintenance for signs of leakage and distress. Also, the blind flange bolting in the recirculation system will be visually inspected by TVA.

The Class 2 piping flange bolting is located at RER pump discharge orifices. Each connection includes 24 studs and 48 nuts (1-1/4 inches). Bolting of one connection shall be visually examined during each inspection interval, and'a total of 3 studs shall be ultra-sonically examined for the four inservice insoeetion intervals.

Flange ligaments between threaded stud holes and stud threads shall ,

be visually examined when the connection is disassembled. The studs and nuts are fabricated to A-193 GR.37 and A-194 GR.2H, respectively.

J. Piping Supports and Hangers (Includes Valve Suonorts)

! There are 80 integrally welded supports in the Class 1 piping systems which will be visually inspected for the preservice

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7/3/79 Table 1 (Coutin cJ)

B r ow,e s Fer ry %e t e e r Pt ..nt Ct..ss I s ommiyt s

'..timated Arca Tstal 5+vle Nt!*oJ of I samt mat tan N.c Rate Firmt C apencnt Mg TestcJ h e t t..n apettity it.;%vtcJ Cater.wy B. f u -I tar (er /Lr) Ritu rk s 40 . 8J 120 tht h %nt h %n t h J. FeeJwater 7 CH-M-2138-C Two welds inacces-C t a. samtesent ial w.:lJa mable (ETW-3-4 2." CS 23 6 UT 2 2 2 3-J Hv-3-22) Lo(atcJ unJer support 24" CS 2 1 UT. FT -

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3-J E!W-3-7. MV-3-24 2J" CS 6 2 ti  ! - I s-t 12" CS 32 a UT 2 3 3 B-J 12" CS 10 10 UT 3 3 4 8-J See Table 1A Br.ansh F8pe t'sunection WelJa 16" CS 1 I UT 1 - - B-J 6" CS 1 -

UT - - - 5-J 4 Care Spr e 75 Cu 't-2142-C Circicfervatial welJs 12" SS 19 5 UT 1 2 2 B-J 12" SS 4 4 UT I I 2 B-J See Table 1A 30" SS 4- 1 UT -

1 - B-J

5. Elik 8 Ot-?t-2141-C One ws!J inacces-Cis. saiorent tal wlds sable (IbiR-3-193) 2 " SS 20 5 UT 1 2 2 s-J LocateJ In Jrywell penetration

.4" SS 3 3 UT 1 1 I B-J See Table 1A

'a l" SS 7 2 UT I -

1 B-J 20" Jissimilar  ! I UT. FT 1 - -

B-F 20" CS 2 1 UT - 1 - B-J b" SS 24 6 UT 2 2 2 8-J 0" Jasstellar 1 1 UT. FT - 1 - B-F 6" CS 4 1 UT - -

1 8-J Bransh pipe connection welds 6" SS 1 1 FT -

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,,c, Table 1 (Continued)

' 7/3/79 Browns Ferry Nuclear Plant Class 1 Components Estimated Area Total Sample Method of Esamination Dose Rate First Component Sample Tested Inspection 4 antity Inspected Category Refueling (ar/hr) Reearks 40 80 120 Honth Month ---Honth-

6. CRD hydraulic return 7 CH-M-2143-C Circumferential welds 4" SS 15 4 UT 1 1 2 B-J

7. RWCU. 5 CH-M-2144-C Circumferential welds 8" CS 2 1 UT 1 - - B-J 6" SS 11 3 UT 1 1 1 8-J '

6" SS 4 4 UT 1 1 2 B-J See Table 1A i 4" CS 5 1 UT -

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8. RCIC 5 CH-M-2144-C Circumferential welds i 6" CS 4 1 UT 1 - -

B-J -

7 CH-M-2145-C

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1 Table 1 (Continued) 713/9

• 3rowns Ferry Nuclear Plant Class l_ fomponents Estimated Area '

Total Sample Method of Examination Dose RJte First Component.. Sample Tested Inspection Qiantity igpe_cted Category. Itefueling (ar/ld Remarks i 40 80 120 Hon tle Mmtle tbu t ti --- -

- 9. HPCI' 7 CH-N-2145-C Circumferential welds

'16" CS 1 1 Irr 1 - -

B-J 14 CS 3 1 UT - 1 - B-J 10" CS 10 3 UT 1 1 1 B-J 10" CS i 4 4 UT 1 1 1 5-J See Table 1A i

10. Pressure Retaining Solting All VT B-C-2 e

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.6 TABLE 1A WELD INSPECTION l'Oi! PIPE 10. IIP PROTECTION SYSTDI  !!EI.D IDENTIFICATION Main Steam GMS-32, G>lS-IS , CMS-24, CtlS-6, Dis-104, KHS-24 Feedwater KFW-39, CW-15, KW-38, CFW-9, CW-12, KW-13, CW-26, KFW-31 CFW-29 CW-3.'

RiiR ' DSRilR-6, DSR11R-7, DSI:liR-4 Core Spray DSCS-12, DSCS-4, DSCS-II, DSCS-5 RNCU DSRWC-4, DSRUC-6, DSRUC-3. DSRWC-5 liPCI Tl!PCI-72, TilPIC-70, TilPJC-70A, T11PCI-71 4

Note:

All the above welds will be inspected during each 10-year inspection interval for additional pipe vliip protection.

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7/3/79 DPP Assigned Sizes Weld No. Inches Material DRWC-3-1A 6 SS -

DRWC-3-1 6 SS DSRUC-3-1 6 SS DRWC-3-2 6 SS ,

DRWC-3-3 6 SS

. DSRWC-3-LA 6 SS DSRWC-3-2 6 SS DSRWC-3-3 6 SS DSRWC-3-4 6 SS .

DSRWC-3-5 6 SS DSRWC-3-6 6 SS 1

DSRWC-3-7 6 SS DRWC-3-4 6 SS .

DRWC-3-5A 6 SS DRWC-3-5B 6 SS DRWC- 3-60 8 CS DRWC 3-59 8 CS DSRWC-3-8 4 CS I#

DSRWC-3-9 4 CS DRWC-3-58 4 CS TRCIC-3-7 6 CS TRCIC-3-6 6 CS TRCIC-3-5 6 CS TRCIC-3-2 6 CS -

DRWC-3-59A 4 CS DRWC-3-59B 4 CS e

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